KR20210085826A - Display Apparatus - Google Patents

Abstract

The present invention provides a display device, which includes: a display panel; a cover window disposed in front of the display panel; a cover bottom disposed on a rear surface of the display panel; and a fastening part surrounding the inside of a through hole formed to integrally penetrate the display panel and the cover bottom from the rear surface of the cover window. Accordingly, it is possible to prevent light leakage through the through hole in a hole-in-display structure by providing the fastening part.

Description

Display Apparatus

The present invention relates to a display device, and to a display device in which a hole passing through a display panel is formed.

Recently, as we enter the information age, the field of display that visually expresses electrical information signals has developed rapidly, and in response to this, various display devices (Display Apparatus) with excellent performance of thinness, light weight, and low power consumption have been developed. is being developed

Specific examples of the display device include a Liquid Crystal Display Apparatus (LCD), an Organic Light Emitting Display Apparatus (OLED), and a Quantum Dot Display Apparatus.

Such a display device is expanding its application range over a wide field, such as a TV, a mobile phone, a laptop, as well as a display device for automobiles.

Also, in the case of a mobile phone, in order to place various sensors or camera modules in the middle of the display device, or in the case of a vehicle display device, a hole-in display device that forms a hole in the middle of the display device to combine analog elements such as a clock or instrument panel needle. (Hole-in-Display Apparatus) is being developed.

However, in the case of a hole-in display device, a problem of light leakage through a hole is raised, and it is difficult to improve a structure for emitting static electricity or electromagnetic waves generated from a display panel or a circuit board.

The present invention is to solve this problem, and more particularly, in a hole-in-display structure in which a through-hole in which a camera module or various sensors can be installed in a display device is formed, light leakage into the through-hole is prevented. It is an object of the present invention to provide a display device capable of performing and simultaneously performing a grounding function.

In order to solve the above problems, the present invention provides a display panel; a cover window disposed in front of the display panel; a cover bottom disposed on a rear surface of the display panel; and a fastening part enclosing the inside of the through hole formed to integrally penetrate the display panel and the cover bottom from the rear surface of the cover window.

The fastening part may be made of any one or a plurality of glue, resin, and synthetic resin material.

At least an area adjacent to the display panel and the cover window of the coupling part may be formed of a black color.

The fastening part may include a first area in contact with a rear surface of the cover window and a second area in contact with a side surface of the display panel or the cover bottom, and the first area and the second area may include a conductive material.

The fastening part may have the first area or the second area in contact with a ground terminal provided on a rear surface of the cover window or a side surface of the display panel.

The fastening portion may include a third region extending from the second region and contacting the rear surface of the cover bottom, and the third region may be in contact with the conductive tape attached to the rear surface of the cover bottom.

The display device may further include a mid frame disposed on a rear surface of the cover bottom and electrically connected to the cover bottom or the conductive tape.

The fastening portion may include a step portion bent from an end of the first region and extending in a rear direction of the cover window.

The step portion may guide the coupling position of the camera module or the sensor unit coupled to the inside of the through hole.

The display device may further include a cushion tape interposed between the display panel and the cover bottom.

According to the display device of the present invention,

First, it is possible to prevent light leakage through the through-hole in the hole-in-display structure by providing a fastening part,

Second, electromagnetic interference (EMI) or electrostatic discharge (ESD) that may occur in the cover window or display panel can be grounded to the outside through the connection part,

Third, there is an effect of guiding the coupling position of the component to be mounted, such as a camera module, by forming a step portion inside the fastening portion, and also preventing the vibration from being transmitted.

1 is an exploded perspective view illustrating an exploded display device according to a first exemplary embodiment of the present invention.
FIG. 2 is a partially enlarged view illustrating an enlarged portion of the display device shown in FIG. 1 .
FIG. 3 is a perspective view illustrating a cross section AA′ of the display device shown in FIG. 1 .
4 is a cross-sectional view illustrating a detailed configuration of the display device shown in FIG. 3 .
5 is a cross-sectional view illustrating a display device according to a second exemplary embodiment of the present invention.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present invention are exemplary, and thus the present invention is not limited to the illustrated matters. Like reference numerals refer to like elements throughout. In addition, in describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, the case in which the plural is included is included unless otherwise explicitly stated.

In interpreting the components, it is interpreted as including an error range even if there is no separate explicit description.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, one or more other parts may be positioned between the two parts unless 'directly' is used.

In the case of a description of a temporal relationship, for example, 'immediately' or 'directly' when a temporal relationship is described with 'after', 'following', 'after', 'before', etc. It may include cases that are not continuous unless this is used.

Although the first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from another. Accordingly, the first component mentioned below may be the second component within the spirit of the present invention.

In describing the components of the present specification, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, order, or number of the elements are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but other components may be interposed between each component. It will be understood that each component may be “interposed” or “connected”, “coupled” or “connected” through another component.

In the present specification, the term “display device” refers to a liquid crystal module (LCM) including a display panel and a driving unit for driving the display panel, an organic light emitting module (OLED Module), and a quantum dot module (Quantum Dot Module). It may include a display device. And, an electric field including a notebook computer, a television, a computer monitor, an automotive display or other type of vehicle, which is a complete product or final product including LCM, OLED module, QD module, etc. A set electronic device such as an equipment display, a mobile electronic device such as a smart phone or an electronic pad, or a set device or set apparatus may also be included.

Accordingly, the display device in the present specification may include a set device that is a narrow display device itself such as an LCM, an OLED module, a QD module, and an application product or an end-user device including an LCM, an OLED module, a QD module, etc. .

And, in some cases, the LCM, OLED module, and QD module composed of the display panel and the driver are expressed as a narrow “display device”, and the electronic device as a finished product including the LCM, OLED module, and QD module is “set” It can also be expressed as "device". For example, a display device in the narrow sense includes a liquid crystal (LCD), organic light emitting (OLED) or quantum dot display panel, and a source PCB that is a control unit for driving the display panel, and the set device is connected to the source PCB. It may be a concept further including a set PCB, which is a set controller that is electrically connected to control the entire set device.

The display panel used in this embodiment includes all types of liquid crystal display panels, organic light emitting diode (OLED) display panels, quantum dot (QD) display panels, electroluminescent display panels, etc. may be used, and the display panel used in the display device according to the embodiment of the present invention is not limited to the shape or size of the display panel.

For example, when the display panel is an organic light emitting (OLED) display panel, it may include a plurality of gate lines and data lines, and pixels formed at intersections of the gate lines and the data lines. In addition, an array including a thin film transistor, which is a device for selectively applying a voltage to each pixel, an organic light emitting device (OLED) layer on the array, and an encapsulation substrate or an encapsulation layer disposed on the array to cover the organic light emitting device layer (Encapsulation) and the like may be configured. The encapsulation layer may protect the thin film transistor and the organic light emitting device layer from external impact, and may prevent penetration of moisture or oxygen into the organic light emitting device layer. In addition, the layer formed on the array may include an inorganic light emitting layer, for example, a nano-sized material layer or quantum dots.

FIG. 1 is an exploded perspective view illustrating an exploded display device according to a first embodiment of the present invention, FIG. 2 is an enlarged partial view showing a portion of the display device shown in FIG. 1 , and FIG. 3 is FIG. 1 . It is a perspective view which shows the AA' cross section of the display device shown in FIG.

1 to 3 , the display device 100 according to the first embodiment of the present invention will be exemplarily applied to a mobile electronic device (hereinafter referred to as a smart phone). The display device 100 includes a display panel 110 , a cover window 120 , a cushion tape 130 , a cover bottom 140 , and a fastening unit 150 .

First, as the display panel 110 , any type of display panel such as a liquid crystal display panel and an electroluminescent display panel may be used. For example, in an electroluminescent display, an organic light emitting diode (OLED) display panel, a quantum dot light emitting diode (Quantum-dot Light Emitting Diode) display panel, or an inorganic light emitting diode (Inorganic Light Emitting Diode) display panel is used. can be used

For example, when the display panel 110 is a liquid crystal display panel, it includes a plurality of gate lines and data lines, and pixels formed at intersections of gate lines and data lines. And an array substrate including a thin film transistor as a switching element for controlling light transmittance in each pixel, an upper substrate including a color filter and/or a black matrix, and a liquid crystal layer formed between the array substrate and the upper substrate may be included.

In addition, when the display panel 110 is an organic light emitting (OLED) display panel, it may include a plurality of gate lines and data lines, and pixels formed at intersections of the gate lines and the data lines. And an array substrate including a thin film transistor which is a device for selectively applying a voltage to each pixel, and an organic light emitting device (OLED) layer on the array substrate and an encapsulation substrate or phosphorus layer disposed on the array substrate to cover the organic light emitting device layer It may be configured to include an encapsulation substrate and the like. The encapsulation substrate may protect the thin film transistor and the organic light emitting device layer from external impact, and may prevent penetration of moisture or oxygen into the organic light emitting device layer.

The layer formed on the array substrate may include an inorganic light emitting layer, for example, a nano-sized material layer or quantum dots.

In addition, a pad portion (not shown) connected to each signal line provided in the pixel array may be provided at an edge portion of one side of the array substrate, and the pad portion is connected to a circuit board driving the panel. Although not shown in the drawings, a separate back plate may be attached to the rear surface of the array substrate.

The display panel 110 may include a touch panel (not shown) disposed on the array substrate. In this case, a touch panel and a polarizing film may be further provided on the upper surface of the array substrate. The polarizing film may provide a function of improving the visibility of the display panel 110 by preventing reflection of light introduced from the outside. The touch panel may sense a user's touch signal.

A light control film (LCM) may be provided on the upper portion of the touch panel. The light control film may control the angle of the light emitted from the display panel 110 to prevent the viewing angle from being increased in an unnecessary direction. In addition, a cover window 120 may be provided at the outermost portion of the display panel 110 . The cover window 120 may be selectively applied with cover glass made of glass, cover plastic made of plastic, or the like.

In addition, a transparent adhesive layer 111 may be disposed between the polarizing film and the touch panel, between the touch panel and the light control film, and between the light control film and the cover window. The pressure sensitive adhesive (PSA) including an optical clear adhesive (OCA) or an optical clear resin (OCR) for UV curing may be applied to the adhesive layer 111 .

Hereinafter, the display panel 110 to which the electroluminescent display panel is applied will be described as an example. However, the present invention is not limited thereto. For example, as the display panel 110 , a quantum dot light emitting display panel of an electroluminescent display, an organic light emitting display panel, or an inorganic light emitting display panel may be applied.

The cushion tape 130 is attached to the rear surface of the display panel 110 , and the cover bottom 140 is coupled to the rear surface of the cushion tape 130 .

Although not shown in the drawings, a back plate (not shown) made of a metal material having a heat dissipation function may be provided on the rear surface of the display panel 110 . Of course, the back plate may be more suitable when the display panel 110 is an electroluminescent display panel. For example, the back plate may have a shape corresponding to the shape of the display panel 110 and may be made of aluminum or copper having excellent thermal conductivity. Of course, the shape and material of the back plate is not limited thereto. For example, the shape of the back plate may have a shape corresponding to the position or structure of the display panel 110 or a printed circuit board coupled to the rear surface of the back plate. In addition, the material of the back plate may be made of one or a plurality of materials of gold, silver, magnesium, carbon fiber, graphite, and graphene having excellent thermal conductivity.

The display panel 110 and the cover bottom 140 may have a through hole 112 integrally penetrated from the rear surface of the cover window 120 .

The through hole 112 may have any one of a camera module (CM), a face recognition sensor module, an infrared sensor module, and a fingerprint sensor module coupled therein. In the embodiment of the present invention, a camera module (CM) combined (see FIG. 5 ) will be described as an example.

The conductive tape 131 not described in FIG. 3 will be described with reference to FIG. 4 .

4 is a cross-sectional view illustrating a detailed configuration of the display device shown in FIG. 3 .

Referring to FIG. 4 , a through hole 112 integrally penetrating from the rear surface of the cover window 120 to the display panel 110 and the cover bottom 140 is formed. A camera module CM may be inserted into the through hole 112 , and light is emitted from the side of the display panel 110 to prevent light from entering the camera module CM inside the through hole 112 . A fastening part 150 is provided.

The fastening part 150 may be formed by thinly applying glue, resin, or a synthetic resin material discharged from the dispenser. In addition, the fastening part 150 may be applied as a structure in which a structure manufactured to correspond to the shape of the through hole 112 is separately inserted and coupled.

In the fastening part 150 , at least an area adjacent to the display panel 110 may be made of black color so that light emitted from the display panel 110 may be blocked from flowing into the through hole 112 . Alternatively, the fastening part 150 may be formed of a dark color that can absorb light. Of course, in order to more effectively prevent light leakage, the entire area of the fastening part may be made of black or a dark color.

In addition, the fastening unit 150 may be made of a material having elasticity and may provide a function of partially preventing vibration from being transmitted to the camera module CM coupled therein.

The fastening part 150 is disposed on the first area A1 adjacent to the rear surface of the cover window 120 , the second area A2 disposed on the side area of the display panel 110 , and the rear surface of the cover bottom 140 . It may include a third area A3 that is The first area A1 is disposed to contact the ground terminal 113 located on the rear surface of the cover window 120 . In addition, the second area A2 is disposed to contact the ground terminal 113 provided on the side surface of the display panel 110 . In this case, the fastening part 150 may be made of a material including a conductive material. That is, at least the outer circumferential surface of the fastening part 150 electrically connects the ground terminal 113 of the cover window 120 and the ground terminal 113 of the display panel 110 to ground the cover bottom 140 . can provide The display panel 110 or the cover window 120 may be damaged by electromagnetic interference (EMI) or electrostatic discharge (ESD), and defects may occur. It may be generated due to an accumulated charge between the circuit board (including the driving element, 130) or the display panel 110 and the system or set structure that mounts it, or through static electricity generated by static unsafe charges being charged to the human body. , the fastening part 150 may form a ground path for discharging such static electricity to the outside.

In addition, when the cover bottom 140 is made of an insulating material, a conductive tape is provided on the rear surface of the cover bottom 140 , and the conductive tape may be connected to a mid frame (not shown) disposed on the rear surface of the cover bottom 140 . . For example, the mid frame may have a structure that supports the rear surface of the display device 100 or is coupled to another set device, and is electrically connected to the conductive tape, so that static electricity is discharged through the ground path formed through the coupling unit 150 . can be done

A back plate may be provided on the rear surface of the display panel 110 so that the cushion tape 130 may be attached to the rear surface of the display panel 110 , or only the cushion tape 130 may be provided without the back plate, and A cover bottom 140 is disposed on the rear surface, and in this case, a conductive tape 131 may be attached between the cushion tape 130 and the cover bottom 140 . The conductive tape 131 may be, for example, a metal tape made of a copper material. The conductive tape 131 may be connected to an external set structure to form a ground path. In addition, in a structure that does not require the cover bottom 140 , the cushion tape 130 or the conductive tape 131 may be configured to contact the fastening part 150 .

Accordingly, according to the display device according to the first embodiment of the present invention, light leakage can be prevented by providing the fastening part 150 inside the through hole 112 , and at the same time, the cover window 120 or the display panel 110 . It has the effect of grounding the static electricity generated from

5 is a cross-sectional view illustrating a display device 200 according to a second exemplary embodiment of the present invention. Hereinafter, the same reference numerals as the aforementioned reference numerals denote the same components.

A through hole 112 integrally passing through the display panel 110 and the cover bottom 140 is formed from the rear surface of the cover window 120 , and a fastening part 250 is provided in the through hole 112 .

Referring to FIG. 5 , in the display device 200 according to the second exemplary embodiment of the present invention, the fastening part 250 includes a stepped part A4 together with first to third regions A1 to A3 . .

The fastening part 250 is disposed on the first area A1 adjacent to the rear surface of the cover window 120 , the second area A2 disposed on the side area of the display panel 110 , and the rear surface of the cover bottom 140 . It may include a third area A3 and a stepped portion A4 bent from an end of the first area A1 . The configuration of the first area A1 to the third area A3 of the fastening part 250 is the same as the above-described structure, and thus a redundant description thereof will be omitted.

The stepped portion A4 extends in the rear direction of the cover window 120 while being bent in the first area A1 . That is, the step portion A4 may have a flange shape protruding inward from the first area A1 . The fastening part 250 may have a cylindrical shape as a whole, and may be deformed into a shape corresponding to the shape of the through hole 112 . As the camera module CM is coupled inside the step part 250 , it is possible to limit the insertion depth of the camera module CM or guide the coupling position of the camera module CM, and also the camera module on the back surface of the cover window 120 . (CM) can prevent direct contact to provide a dustproof function. In addition, since the step portion A4 is in close contact with the rear surface of the cover window 120 together with the first area A1 , it is possible to completely block light leakage from the display panel 110 toward the camera module CM. . Although not shown in the drawings, a step-shaped pattern may be formed on a surface of the step portion A4 in contact with the camera module CM. Such a step pattern may guide the center alignment of the camera module (CM), and may be a more advantageous structure for counteracting foreign matter inflow or light leakage.

A sealing material or double-sided tape 160 that can provide a separate dustproof function, an attachment function, and the like may be provided between the step portion A4 and the camera module CM. Although not shown in the drawing, a separate insulating material is provided on the inner circumferential surface of the fastening part 250 to prevent the camera module CM disposed therein from being damaged by static electricity while the fastening part 250 forms a ground path. It may be applied or attached, or it may be manufactured to include a conductive material only on the outer peripheral surface of the fastening part 250 .

Therefore, according to the display device 200 according to the second embodiment of the present invention, the coupling position of the camera module CM can be set without additional configuration by coupling the coupling part 250 to the inside of the through hole 112 . , light leakage can be more firmly maintained, and static electricity is not transmitted to the camera module (CM), and at the same time, there is an effect of blocking external force such as vibration from being transmitted to the camera module (CM).

Features, structures, effects, etc. described in the above-described examples of the present application are included in at least one example of the present application, and are not necessarily limited to only one example. Furthermore, features, structures, effects, etc. illustrated in at least one example of the present application may be combined or modified with respect to other examples by those of ordinary skill in the art to which the present application belongs. Accordingly, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present application.

The present application described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the technical field to which this application belongs that various substitutions, modifications, and changes are possible within the scope not departing from the technical matters of the present application. It will be clear to those who have the knowledge of Therefore, the scope of the present application is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present application.

100, 200: display device
110: display panel
120: cover window
130: cushion tape
140: cover bottom
150: fastening part

Claims (10)

display panel;
a cover window disposed in front of the display panel;
a cover bottom disposed on a rear surface of the display panel; and
a fastening part enclosing an inside of a through hole formed to integrally penetrate the display panel and the cover bottom from the rear surface of the cover window;
A display device comprising a. According to claim 1,
The fastening part,
A display device comprising any one or a plurality of glue, resin, and synthetic resin materials. According to claim 1,
The fastening part,
A display device in which at least an area adjacent to the display panel and the cover window is black. According to claim 1,
The fastening part,
a first area in contact with the rear surface of the cover window;
a second region in contact with a side surface of the display panel or the cover bottom;
The first region and the second region include a conductive material. 5. The method of claim 4,
The fastening part,
A display device in which the first region or the second region contacts a ground terminal provided on a rear surface of the cover window or a side surface of the display panel. 6. The method of claim 5,
The fastening portion includes a third region extending from the second region and contacting the rear surface of the cover bottom,
The third region is in contact with a conductive tape attached to a rear surface of the cover bottom. 7. The method of claim 6,
and a mid frame disposed on a rear surface of the cover bottom and electrically connected to the cover bottom or the conductive tape. 5. The method of claim 4,
The fastening part,
and a step portion bent from an end of the first region and extending in a rear direction of the cover window. 9. The method of claim 8,
The step portion,
A display device for guiding a coupling position of a camera module or a sensor unit coupled to the inside of the through hole. According to claim 1,
The display device further comprising a cushion tape interposed between the display panel and the cover bottom.

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